Stats Calculator Online
Correlation Calculators
Pearson, Spearman, Kendall, and point-biserial association. Free tools on Stats Calculator Online with formulas, how-to steps, similar calculator widgets, tidbits, and exportable reports.
- Pearson Correlation CalculatorLinear correlation coefficient r
- Spearman Correlation CalculatorRank-based Spearman ρ
- Kendall’s Tau CalculatorKendall τ-b concordance measure
- Point-Biserial Correlation CalculatorCorrelation of a binary and continuous variable
Tidbits from Stats Calculator Online
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Correlation is not causation
Pearson r measures linear association. Plot the scatter first, and prefer Spearman when the relationship is monotonic but not linear.
Correlation tools →Tidbit
Read confidence intervals carefully
A 95% CI means that in repeated sampling, about 95% of such intervals would cover the true parameter—not that this one interval has a 95% chance.
CI calculators →
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